* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

input {
  width: 100%;
  outline: none;
  line-height: 30px;
  font-size: 16px;
  border: 1px solid rgb(200, 225, 233);
  padding: 0 5px;
}

.btn {
  display: none;
  height: 30px;
  position: absolute;
  right: -10px;
  top: 50%;
  transform: translate(-50%, -50%);
  float: right;
  padding: 2px 12px;
  border: 1px solid rgb(226, 226, 226);
  border-radius: 4px;
  background-color: rgb(255, 96, 68);
  font-size: 12px;
  color: rgb(255, 255, 255);
  cursor: pointer;
  text-align: center;
}

.App {
  width: 600px;
  border: 1px solid rgb(226, 226, 226);
  border-radius: 5px;
  margin: 50px auto;
  padding: 10px;
}